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In the given electromagnetic wave E _ y =600 ( t - kx ) Vm ⁻¹ , intensity of the associated light beam is (in W / m ^2 : (Given ₀=9 10⁻¹² C ^2 ~N ⁻¹ ~m ⁻² )

Options

  1. A243
  2. B729
  3. C972
  4. D486

Correct answer

D. 486

Step-by-step solution

aligned Intensity & = 1 2 ₀ E ₀^2 c & = 1 2 9 10⁻¹² (600)^2 3 10^8 & = 9 2 36 3=486 w / m ^2 aligned

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